EP 2052809 A1 20090429 - Drilling machine for breaking chips formed by a drilling operation
Title (en)
Drilling machine for breaking chips formed by a drilling operation
Title (de)
Bohrmaschine zum Brechen von mittels Bohroperation gebildeten Späne
Title (fr)
Perceuse pour casser les copeaux formés par perçage
Publication
Application
Priority
US 92568807 A 20071026
Abstract (en)
A drilling machine (20) is provided for breaking chips formed by drilling action into manageable lengths. The drilling machine (20) comprises a first gear having a first axis of rotation, and a cam follower surface. It has a second gear having a second axis of rotation coincident with the first axis of rotation. A housing is provided configured to support the first gear and the second gear, the housing having an undulating cam plate surface (206), a spring (212) and a tool holder spindle (28) having a third axis of rotation. The first and second gears are configured to impart both a linear feed and a rotation to the spindle (28). The first and second axes of rotation are coincident with the third axis of rotation such that the cam surface (206) is urged into contact with the cam follower (208) surface by the spring (212). The cam surface (206) includes a plurality of steel balls positioned to follow the cam plate surface (206) such that when the first gear rotates, the first gear is caused repeatedly to retract and then to advance, breaking chips that are formed.
IPC 8 full level
B23Q 5/32 (2006.01); B23B 47/34 (2006.01)
CPC (source: EP US)
B23B 47/34 (2013.01 - EP US); B23Q 5/323 (2013.01 - EP US); B23Q 5/326 (2013.01 - EP US); Y10T 408/23 (2015.01 - EP US); Y10T 408/68 (2015.01 - EP US); Y10T 408/73 (2015.01 - EP US)
Citation (search report)
- [Y] US 2007209813 A1 20070913 - VERES RICHARD [US]
- [Y] DE 102005002462 A1 20060727 - BOTEK PRAEZISIONSBOHRTECHNIK GMBH [DE]
- [A] FR 1274306 A 19611020 - BOSCH GMBH ROBERT
- [A] JP S60180704 A 19850914 - YUNIPOOTO TOREEDEINGU KK, et al
- [A] US 2458929 A 19490111 - CLARK CARLETON B
- [A] EP 0861996 A1 19980902 - HARMONIC DRIVE SYSTEMS [JP]
- [A] DE 2345866 A1 19750327 - DUERKOPPWERKE
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
EP 2052809 A1 20090429; EP 2052809 B1 20130403; US 2009110496 A1 20090430; US 8007210 B2 20110830
DOCDB simple family (application)
EP 08253409 A 20081021; US 92568807 A 20071026